The Larimer County Coroner's Office will determine the Scottsbluff, Nebraska, man's cause of death and should release that information in the next couple of days.

Details about Saturday's strike near the popular Rainbow Curve pullout area were still sparse Sunday morning. Park spokeswoman Kyle Patterson told the Coloradoan previously lightning struck the area at about 3:50 p.m.

Four people were injured, including Cardwell.

Saturday's emergency came just 26 hours after eight people were injured — one fatally — in a lightning strike on the Ute Crossing Trail, located between Rainbow Curve and Forest Canyon Overlook at an elevation of 11,400 feet.

The victim from Friday's strike was identified as Rebecca R. Teilhet, 42, of Yellow Springs, Ohio, according to the news release. Teilhet had been hiking with her husband and a friend when lightning struck. Despite a medical helicopter's response, she was pronounced dead on the scene.

Two people have been killed in two days in separate lightning strikes at Rocky Mountain National Park, RMNP spokesperson Kyle Patterson confirms. 9NEWS at 9 p.m. 07/12/14.

The last lightning fatality that occurred in Rocky Mountain National Park was in 2000 when a technical climber was struck while climbing The Diamond on Longs Peak, Patterson said.

Friday's strike was the first lightning fatality in Colorado since 2011, according to National Weather Service data. To have back-to-back fatalities in the same state — within walking distance of one another a day apart — is rare and might be unprecedented, according to records.

So far in 2014 across the country, 11 people — including the two from this weekend — have been killed by lightning. Four fatal instances have happened in Florida alone. In 2013, 23 people across the country were killed by lightning strikes, down slightly from 28 the year prior, records show.

Storms in the high country, particularly above tree line in Colorado, are known to build rapidly this time of year. Afternoon thunderstorms are almost guaranteed, and hikers are encouraged to be down from summits and ridges by noon if possible to avoid getting caught in a storm without cover.

Ryan Haarer has these tips for what to do if you're hiking in a lightning storm. 9NEWS at 5 p.m. 07/12/14.

If you hear thunder, lighting is close enough to strike you. Immediately move to safe shelter and wait until 30 minutes after the last rumble of thunder before going back outside. To tell how far away a strike is from you, count the number of seconds between the flash and the thunder. Divide by five, and that will give you the number of miles away that strike was.

If you can't get to shelter:

Get off elevated areas like ridges, peaks or hills. Stay away from ponds or bodies of water.

In the most dire situation, crouch on the balls of your feet and make yourself as small as possible. This is a last resort.